Mbb BK117 accident near Wooster, Ohio, July 4, 2020
On July 4, 2020 at about 5:57 pm local time, a 2009 Mbb BK117 (helicopter), registered N263MH, was substantially damaged in an accident during taxi (to runway) near Wooster, Ohio (Wayne County airport). It was flown under charter and air-taxi rules (Part 135). No one was hurt; 4 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The entanglement of construction fencing into the main rotor system, which necessitated a forced landing that resulted in substantial damage to the helicopter.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 4, 2020 · about 5:57 pm local time
- Place
- Wooster, Ohio · Wayne County · map
- Type
- Accident
- Injuries
- No one was hurt; 4 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Mbb BK117 C2, built 2009
- Registration
- N263MH · registry record · serial 9311
- Damage
- Substantial damage
- Flight
- Flight · charter and air-taxi rules (Part 135)
The NTSB's narrative final · quoted from the NTSB record
During departure from a portable dolly, the helicopter crew flew over an area where silt construction fencing was installed. While the helicopter flew about 10 ft above ground level and over the fence, the fence became unsecured and blew up and into the main rotor system. The crew then performed a forced landing, which resulted in substantial damage to the fuselage, tailboom, and tail rotor blades. Although the crew was aware of the fence, they did not believe it would be a factor during the departure because they had previously flown over it with no issues.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Miscellaneous/other during taxi (to runway) defining event
The NTSB's findings
- Environmental issues › Physical environment › Object/animal/substance › Fence/fence post › Effect on equipment
Pilot
- Certificate: commercial pilot
- Ratings: instrument: helicopter; rotorcraft: helicopter
- Flight time: 5,844 hours in all; 1,827 in this make and model; 40 in the last 90 days; 20 in the last 30 days; 2,419 as pilot in command
- Last flight review: March 25, 2020
- Medical certificate: Class 1 (with waivers/limitations)
- Seat: left
- Injury: no injuries
Pilot
- Certificate: commercial pilot
- Ratings: instrument: helicopter; rotorcraft: helicopter
- Flight time: 2,970 hours in all; 750 in this make and model; 20 in the last 90 days; 13 in the last 30 days; 2,250 as pilot in command
- Last flight review: March 7, 2020
- Medical certificate: Class 1 (without waivers/limitations)
- Seat: rgt
- Injury: no injuries
The aircraft
- Airframe total time: 4,988.9 hours
- Last inspection: approved inspection programme, June 23, 2020
- Maximum gross weight: 7,903 lb
- Seats: 6
- Landing gear: fixed
- Engine 1: Safran Arriel 1E2 (turboshaft); 5,697 hours total
- Engine 2: Safran Arriel 1E2 (turboshaft); 4,377 hours total
The flight
- Destination: Oberlin OH
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 060° at 7 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 86°F (30°C), dew point 64°F (18°C)
- Altimeter: 30.03 inHg
- Observation at 12:56 pm from KBJJ
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 4 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
5 documents, released by the NTSB on February 23, 2022. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.
| # | Document | What it is | |
|---|---|---|---|
| 1 | Pilot/operator Aircraft Accident Report, NTSB Form 6120.1 | PDF, 9 pages | View Download |
| 2 | Pilot's Statement | PDF, 4 pages | View Download |
| 3 | FAA Inspector Statement | PDF, 1 page | View Download |
| 4 | Airport Manager Record of Conversation | PDF, 1 page | View Download |
| 5 | Photos | PDF, 3 pages | View Download |
The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.